This problem for a long time, a drive shaft with a key, how to fix the position after the rotation of concrete keyway, don't specify the rotation and rotation angle, through parallel or perpendicular to that location
I've seen other people, can first determine a plane for reference and choose the angle
What do I do if I want the slot above to be horizontal?
Reply to SolidEdge's post, this is just a small problem, if the screw